Clinical Oral Structures, Dental Anatomy and Root Morphology
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| At approximately what age will a child’s permanent mandibular central incisors start formation? A. 6 weeks in utero B. at birth C. 3 years D. 6 years | show 🗑
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| The rounded elevations on the incisal edge of permanent incisors are: A. Caused by a developmental disturbance in utero B. Due to trauma to the primary central incisors C. Evidence of lobe development D. Evidence of chewing on hard objects | show 🗑
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| show | A. There should be 12 molars in children approximately seven to eleven years of age: eight primary molars (four first and four second primary molars) and four permanent first molars.
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| A prominent maxillary labial frenum should be watched for possible development of: A. Gingival recession B. Diastema C. Speech defect D. Primate space | show 🗑
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| show | C. A distal step of the second primary molars in centric occlusion always leads to a Class II or distal occlusion.
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| When initially opening the mouth, both condyles should: A. Move down, forward, and medial B. Move down, forward, and lateral C. Move down and forward D. Rotate in the mandibular fossa | show 🗑
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| Which of the following is located in the vestibule? A. Mucobuccal fold B. Palatine raphe C. Plica fimbriatae D. Philtrum | show 🗑
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| Which of the following frena, if short and taut, may affect an individual’s speech? A. Maxillary labial frenum B. Lingual frenum C. Mandibular labial frenum D. Buccal frena | show 🗑
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| show | A. The parotid papilla has an opening for the parotid salivary gland and the sublingual caruncle for the submandibular salivary gland; both glands are major salivary glands.
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| Which of the following is the injection site for local anesthesia of the nasopalatine nerve? A. Maxillary labial frenum B. Palatine fovea C. Retromolar area D. Incisive papilla | show 🗑
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| The pterygomandibular raphe is located between the glossopalatine and pharyngopalatine arches; it can be palpated medial to the ramus of the mandible. A. Both = true B. Both = false C. 1st = true 2nd= false D. The 1st = false2nd = true | show 🗑
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| show | C. The interfurcal ceiling is the most crownwards portion of the furcation and is called the ceiling for both maxillary and mandibular teeth. Sometimes it is located more crownward than the furcation entrance.
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| show | B. The CEJ is located at the meeting of the anatomic crown and the anatomic root.
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| The term mamelon is associated with which of the following tooth surfaces? A. Distal B. Incisal C. Mesial D. Occlusal | show 🗑
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| show | A. A cingulum is a linguocervical elevation or ridge found only on all anterior teeth.
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| show | D. The primary mandibular left first primary molar is L in the Universal System and #7.4 in the ISO System.
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| Which of the following is true when comp. root trunks of teeth that have 2 or 3 roots? A Molar root trunks are longer than premolars B Max root trunks are longer than mand trunks C 1st molar rt trunks are longer than 2nd molar rt trunks | show 🗑
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| How many roots on a maxillary molar have mesial surfaces to instrument from a buccal approach? A. None B. One C. Two D. Three | show 🗑
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| The facial surfaces of the max & mand first primary molars display: A. A prominent buccal pit groove and pit B. A prominent cervical curvature on the mesial half C. Two facial cusps of approximately the same size D. A prominent, pointed mesiobuccal cusp | show 🗑
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| In the dentition of a typical seven-year-old child, what succedaneous teeth would be present? A. Permanent incisors B. Permanent incisors and permanent first molars C. The primary teeth D. Only the permanent first molars | show 🗑
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| show | A. The location of the mesiobuccal cusp of the maxillary first permanent molar in relation to the mesiobuccal (buccal) groove of the mandibular first permanent molar is used in Angle’s Classification of Malocclusion.
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| The centric occlusion of a 5-year-old is assessed by the relationship of the: A. Cusps & grooves of the primary 1st molars B. Cusps & grooves of the primary 2nd molars C. Terminus of the primary 2nd molars D. Distal surfaces of the primary canines | show 🗑
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| Which of the following mandibular movements of mastication has both working and balancing sides? A. Lateral movement B. Opening C. Protrusion D. Retrusion | show 🗑
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